Quantum networks boosted by entanglement with a control system
arXiv:2206.05247 · doi:10.1103/PhysRevResearch.5.033214
Abstract
Networks of quantum devices with coherent control over their configuration offer promising advantages in quantum information processing. So far, the investigation of these advantages assumed that the control system was initially uncorrelated with the data processed by the network. Here, we explore the power of quantum correlations between data and control, showing two communication tasks that can be accomplished with information-erasing channels if and only if the sender shares prior entanglement with a third party (the ``controller'') controlling the network configuration. The first task is to transmit classical messages without leaking information to the controller. The second task is to establish bipartite entanglement with a receiver, or, more generally, to establish multipartite entanglement with a number of spatially separated receivers.
19 pages, 3 figures
References in corpus (12)
- The thermodynamic meaning of negative entropy
- Experimental Verification of an Indefinite Causal Order
- Towards Quantum Gravity: A Framework for Probabilistic Theories with Non-Fixed Causal Structure
- Hierarchies of Geometric Entanglement
- Noisy quantum metrology with the assistance of indefinite causal order
- Work extraction from coherently activated maps via quantum switch
- Experiments on quantum causality
- Random-Receiver Quantum Communication
- Quantum parameter estimation on coherently superposed noisy channels
- Experimental quantum key distribution over highly noisy channels
- Operations and single particle interferometry
- Universal control of quantum processes using sector-preserving channels
Cited by in corpus (4)
- Deterministic Generation of Multipartite Entanglement via Causal Activation in the Quantum Internet
- Activation of thermal states by coherently controlled thermalization processes
- Correlations in a quantum switch-based heat engine with measurements: A proof-of-principle demonstration
- Entanglement dynamics of two modes coupled through a dissipative movable mirror in an optomechanical system